CAT 446B Backhoe Loader Operation & Maintenance Manual PDF

446B BACKHOE LOADER S/N 5BL00001-02499

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  Product: BACKHOE LOADER Model: 446B BACKHOE LOADER 5BL Configuration: 446B Backhoe Loader 5BL00001-03294 (MACHINE) POWERED BY 3114 Engine

Operation and Maintenance Manual 446B Backhoe Loader Media Number -SEBU6652-01

Publication Date -01/04/1997

Date Updated -12/05/2004

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Battery Electrolyte Level - Check SMCS - 1401 Table 1 THE TABLE FOR THE BATTERY ELECTROLYTE Battery

Interval

Conventional

100 Hours

Low Maintenance

250 Hours

Maintenance Free

Maintenance Free

Tighten the battery retainers on all of the machines. Tighten the battery retainers at every 1000 hours.

Check the following items at every 1000 hours. If necessary, check the following items more often.

• Clean the top of the batteries with a clean cloth.

• Clean the battery terminals. As needed, coat the battery terminals with petroleum jelly.

A battery should not require more than 30 cc (1 oz) of water per cell per week. This should exist with the proper charging rate and with a moderate climate.

In extreme temperatures, check the water in the cells weekly.

Illustration 1

g00104990

1. Open the battery access cover that is located on the right side of the machine.

2. Clean the battery surface with a clean cloth. Keep the terminals clean and keep the terminals coated with petroleum jelly. Install the post cover after you coat the post with petroleum jelly.

3. Inspect the electrolyte level in each battery cell. A maintenance free battery does not require inspection. Maintain the electrolyte level to the bottom of the filler openings. Use distilled water. If distilled water is not available, use clean drinking water.

4. Close the battery access cover.

Copyright 1993 - 2023 Caterpillar Inc. All Rights Reserved.

Private Network For SIS Licensees.

Tue Feb 14 20:00:10 UTC+0530 2023

  Product: BACKHOE LOADER Model: 446B BACKHOE LOADER 5BL Configuration: 446B Backhoe Loader 5BL00001-03294 (MACHINE) POWERED BY 3114 Engine

Operation and Maintenance Manual 446B Backhoe Loader Media Number -SEBU6652-01

Publication Date -01/04/1997

Date Updated -12/05/2004

i00080792

Battery or Battery Cable - Replace SMCS - 1401 1. Turn the engine start switch to the OFF position. Turn all switches to the OFF position.

2. Remove the fuse for secondary steering when the machine is equipped with 9R-6221 Secondary Steering Attachment .

3. Disconnect the negative battery cable from the frame.

Note: Do not allow the disconnected battery cable to contact the frame of the machine.

4. Disconnect the negative battery cable at the battery.

5. Perform the necessary repairs. Replace the cable or the battery, as needed.

6. Connect the negative battery cable at the battery.

7. Connect the battery cable to the frame of the machine.

8. Install the fuse for secondary steering.

9. Install the engine start switch key.

Copyright 1993 - 2023 Caterpillar Inc. All Rights Reserved.

Private Network For SIS Licensees.

Tue Feb 14 20:00:22 UTC+0530 2023

  Product: BACKHOE LOADER Model: 446B BACKHOE LOADER 5BL Configuration: 446B Backhoe Loader 5BL00001-03294 (MACHINE) POWERED BY 3114 Engine

Operation and Maintenance Manual 446B Backhoe Loader Media Number -SEBU6652-01

Publication Date -01/04/1997

Date Updated -12/05/2004

i00080882

Braking System - Test SMCS - 4251; 4267

Service Brake Holding Ability Test Check the area around the machine. Make sure that the machine is clear of personnel and clear of obstacles.

Test the brakes on a dry, level surface.

Fasten the seat belt before you test the brakes.

The following tests are used to determine if the service brake is functional. These tests are not intended to measure the maximum brake holding effort. The brake holding effort that is required to sustain a machine at a specific engine rpm varies depending on the machine. The variations are the differences in the engine setting, in the power train efficiency, and in the brake holding ability, etc.

1. Start the engine. Raise the bucket slightly.

2. Apply the service brake. Release the parking brake.

3. Move the transmission control lever to FOURTH SPEED FORWARD. 4. Gradually increase the engine speed to high idle. The machine should not move.

If the machine begins to move, reduce the engine speed immediately and engage the parking brake.

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